Group Multicast Method, Group Creation Method, and Mobile Network Platform

3. The group multicast method of claim 1, wherein the mobile network multicast request and the access command further carry the response address.

5. The group multicast method of claim 1, wherein the device group comprises a device sub-group, wherein the method further comprises determining that the device sub-group corresponds to an external sub-group, wherein the external sub-group is stored in a mobile network server, and an identifier of the external sub-group is stored in the mobile network platform, wherein a member device of the external sub-group is also the member device of the device sub-group, and wherein the mobile network multicast request further carries an identifier of the external sub-group.

6. The group multicast method of claim 5, further comprising determining a multicast type of the device sub-group, wherein allocating the response address to the member device in the device group comprises allocating the response address to a member device in the device sub-group according to the multicast type of the device sub-group.

9. The mobile network platform of claim 8, wherein the processor is further configured to aggregate the response information to generate aggregated response information, and wherein the transmitter is further configured to send the aggregated response information to the service layer apparatus.

10. The mobile network platform of claim 8, wherein the mobile network multicast request and the access command further carry the response address.

11. The mobile network platform of claim 8, wherein the device group comprises a device sub-group, wherein the processor is further configured to determine that the device sub-group corresponds to an external sub-group, wherein the external sub-group is stored in a mobile network server, wherein an identifier of the external sub-group is stored in the mobile network platform, wherein a member device of the external sub-group is also the member device of the device sub-group, and wherein the mobile network multicast request further carries an identifier of the external sub-group.

14. The computer program product of claim 12, wherein the mobile network multicast request and the access command further carry the response address.

16. The computer program product of claim 12, wherein the device group comprises a device sub-group, wherein the external group comprises an external sub-group, and wherein the device sub-group and the external sub-group comprise the member device.

17. The computer program product of claim 16, wherein the instructions further cause the apparatus to determine that the device sub-group corresponds to the external sub-group, wherein the external sub-group is stored in the mobile network server, wherein a third identifier of the external sub-group is stored in a mobile network platform, and wherein the mobile network multicast request further carries the third identifier.

19. The computer program product of claim 18, wherein the multicast type comprises a cell broadcast service (CBS).